You don't, because an XF Falcon doesn't have rack and pinion steering. It has a steering box.
similar to xf falcon
The XF falcon bullbar will fit a AU falcon with a little bit of fabrication.
Ford AU Falcon was created in 1998.
Ford XM Falcon was created in 1964.
Ford EL Falcon was created in 1996.
Ford BA Falcon was created in 2002.
Ford BF Falcon was created in 2005.
Ford XK Falcon was created in 1960.
Ford XE Falcon was created in 1982.
Ford XB Falcon was created in 1973.
Ford EB Falcon was created in 1991.